an imaginary line around which a turning object spins

point around which something revolves

a bar or a rod on which a pair of wheels turn

shaft around which wheels rotate

a framework with bars, pegs etc used for holding things, hanging things on etc; a shelf over the seats of a train, bus etc for light luggage

frame, framework

a thin rod used for spinning; a bar on which something turns (e.g. an 'axle')

shaft

a light, upright structure of strips of wood, used for supporting plants etc

latticework